Nasal respirator



March 3, 1942. H. D. CARROLL NASAL RESPIRATOR Filed Aug. 10, 1940 QInvcnidr //ar0 /a" fi. CZr/O A iiomey Patented Mar. 3, 1942 UNITEDSTATES PATENT OFFICE 2,274,886 NASAL misrma'ron Harold D. Carroll,Marion, Ohio Application August 10, 1940, Serial No. 352,154

. wardly-curved as indicated by the numeral IT in 1 Claim.

My invention relates to improvements in nasal respirators for insertionin the nostrils to filter the air to prevent dust, pollen, and otherimpurities entrained in the air from passing into the nasal passages,and the primary object of the invention is'to provide a simple andeflicient arrangement of this character which is invisible when worn.

Other important objects and advantages of my invention will be apparentfrom a reading of the following description taken in connection with thedrawing, wherein for purposes of illustration the preferred embodimentof my invention is shown. In the drawing:

Figure 1 is a general schematic view showing one of my respiratorsmounted in the nostril.

Figure 2 is a view looking toward the small end of the respirator and asshown by the arrow in Figure 1. A

Figure 3 is a bottom plan view, and looking in the direction 'of thearrow shown in Figure 1.

Figure 4 is an enlarged longitudinal vertical sectional view, thesection being taken on line 4-4 or Figure 3.

Figure 4, the shape of this wall conforming to the shape of the heelregion of the floor 6. An inner wall portion 18 arises from the straightlongitudinal edge I of the floor 6 while another longitudinal wallportion l9 rises from the curved or bowed edge 8 of the floor 6, thewall portions l8 and l 9 being connected with and merged into the endwall portions l5 and IS, with the upper edges of the side wall portionsinclining upwardly and rearwardly in a graduated manner as indicated inFigure 4. In addition the wall portion 18 is inwardly curvedly deflectedas indicated in Figure 2, while the wall portion I9 is outwardlycurvedly deflected as also indicated in Figure 2. The upper edges of thevarious wall portions cooperate to produce the oval aperture!!! whichhas rounded and smoothed edges.

Figure 5 is a plan view of the spring retaining tudinal edge 8 islongitudinally bowed. The heel end of the floor 6 is symmetricallyrounded as indicated by the numeral 9 while the opposite end isasymmetrically rounded as indicated by the numeral it, so that the heelarea of the bottom is slightly smaller in area than the toe region. The

toe region is provided with a plurality of relatively closely spacedholes II to admit air into the interior of the respirator body, whilethe intermediate part of the floor 6 and the heel area thereof areprovided with respective openings i2 and I3 separated by a transversebar 3. The opening i2 is substantially square in shape while the opening[3 is substantially semi-circular in shape.

A continuous wall rises from the edges of the bottom or floor 6, thesaid wall being composed of the relatively short rearwardly incliningfront wall portion l5 following the contour of the toe region of thefloor S, the relatively high or tall wall portion [6 which extendssubstantially perpendicularly and then is rearwardly and up- Areplaceable pad of lambs wool or the like designated by the numeral 2!lies removably on the top of the floor 6 and over the holes II and theopenings l2 and I3, and this is held removably in place by a spring wireloop 22 which when placed on top of the pad within the side walls of therespirator springs open to conform to the contour of the walls and clampthe pad down in place. The spring loop and the pad may be easily removedfor replacement by a simple tool. The pad 2! will be soaked withmedicinal mineral oil of suitable character to increase the filteringeffect of the pad and to provide the desired medication. I

As indicated in Figure 1 of the drawing, the curved rear wall it isplaced against the rear wall of the nostril as indicated by the numeral23, when the respirator is inserted in the nostril so that the slantingfront wall 15 bears as indicated by the numeral 26 on the front part ofthe nostril, while the side wall l8 bears against the cartilage betweenthe nostril and the outer wall l9 bears against the side of the interiorof the nostril, all at a level above the lower end of the nostril so asto be out of sight when worn.

Although I have shown and described herein a preferred embodiment of theinvention, it is to be definitely understood that I do not wish to limitthe application of the invention thereto except as may be required bythe scope of the subioined claim.

What is claimed is:

A nasal respirator comprising a body consisting of a bottom plate, saidplate having large ment resting upon said bottom plate over theperforatlons thereof, and removable means holding said pad down inplace, said body being horizontally elongated and formed with roundedends. the inner longitudinal side of said body being substantiallystraight and the outer longitudinal side of said body being laterallyoutwardly curved, the front end wall being short and sloping upwardlyandinwardlyto flt in the front portion of a nostril, the rear wall beingmuch m HAROLD n. CARROLL.

